Bacterial-Based Self-Healing Concrete_Luthfi.pdf

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1. Bacterial-Based of Self-Healing Concrete
Dr.-Ing.LuthfiMuhammad Mauludin,SST.,MSAHC
Head of Civil EngineeringDepartment
Politeknik NegeriBandung
Joint Research Proposal
Submittedby

2. BACKGROUND
•Concrete is a popular structure
•Easy to apply
•Has many advantages
•High Durability
Concrete Structures
•These cracks are caused by dry
shrinkage, aggregate reaction, and
alsooverload.
•Can make the reinforcing steel to
be corroded.
•If small cracks are left for longthey
will get bigger and endanger human
lives.
Cracks happened
•Sustainable Materials
•Limited Research
•Bacterial-based concrete is
better than traditional concrete
because of its environmentally
friendly nature.
Self-healing concrete

3. The Objective of Self-Healing Concrete
CaC6H10O6+6O2→CaCO3+5CO2+5H2O2(Tziviloglouetal.,2016).
CalciumLactate CalciumCarbonate
Bacteria-Bacillusmegateriumascatalysator
Crackinitiation
Bacteria+calciumlactate
Concrete
+Water
Multiplication
Oxygen
TheCrackwillbesealed

4. On-Going Research Results

5. Compressive Strength
17.4
24.4
27.1
20.3
26.1
29.0
15.0
17.0
19.0
21.0
23.0
25.0
27.0
29.0
31.0
Virgin Concrete BBC 1% BBC 2%
Compressive Strength (MPa)
Concrete Types
Compressive Strength of Bacterial -Based Concrete
14 days 28 days
17.4
15.3
11.2
20.3 20.2
16.3
10
12
14
16
18
20
Virgin Concrete Fly Ash Concrete 2% Fly Ash Concrete 5%
Compressive strength (MPa)
Types of Concrete
Compressive Strength of Virgin and Fly ash Concrete
14 days 28 days
Types of ConcreteDay 14Day 28
Virgin Concrete17,43 20,33
Beton Fly Ash 2%15,30 20,22
Beton Fly Ash 5%11,23 16,27

6. Compressive Strength AfterSelf-Healing
Concrete types Recovery Percentage (%)
BBC 1% 74,652
BBC 2% 68,096
BBC 1% + Fly Ash 2% 94,719
BBC 2% + Fly Ash 2% 96,583
BBC 1% + Fly Ash 5% 83,429
BBC 2% + Fly Ash 5% 97,952

7. Self-Healing process
Before
Healing
After
Healing

8. Thank you!